Mufeler



Aug. 28,L 1923.

1,466,037 w. H. BANDS MUFFLER Filed Jan. 27 1922 Patented Aug. r28, 1923.

UNITED"STATI-;s

PATENT ortica. f

vWILLIAM H. BANDS, vor sourHMoN'r isoaor'lerr 1 nunsYLvANm..f`

MUrjLEn.

,pplication led January 27, `1922. 4Serial No. 532,108.

To @ZZV whom z't may Concern.' l

Be it kno'vvn that I, WrLLrAM I-I. BANDS, a citizen of the UnitedA States, anda resident of the borough of Southmont, in the countyy of Cambria and StatejofPennsylvania, have invented certain new and usefull Improvements in Mufflers; and Iv do hereby declare the following to bea full, clear, andveXact description of the invention, suchas will enable others skilled in the art to which it appertains to make and usethe same.

AMy invention relates to aV lmuffler or silencer forV use in connection with the pasthe noise vis nerve-rackingjand not conducive to the personal comfort whichis necessary in order that the workers may more easily produce their best efforts. Y Y

Although my invention kis applicable to many forms of apparatus, as will be evident', I will, for the sakeof simplicity and description herein confine myself to its use in connection with a Asteam injector blowerpwhich is used for injecting air, mixed with steam, to a fuel bed to promote-the combustion thereof, and although this maybe supplied to many kinds of fuel beds, the descrip-tion herein relates to its use in connection withl a `gas producer'.V A steam and air injector lower isA connectedgto a` fuel bedin any suitable manner and is provided with a steam supply pipe having a valve to reguv late the supply of steam thereto, which steam may issue in the form of a jet or jets,` and by reason of its velocity and movement it inducts air, and a'miXture of steam and air is forced into the fuel bed, which,without my apparatus, Vcauses aloud and roaring noise, but which my invention prevents.- In order to accomplish this I provide a silencer or mufiler which maybe madefo-fsheet or cast'metal, preferably with a number of passages' of large size so as, to reducethe ,ve-y

locity of the gases andvapors passing therethrough, and through this muffler a steam pipe, as above mentioned,is introduced andl connected with the inlet of the injector blower, i f,

- Owing to the considerable surface exposed, a certainamount of steam will be condensed, which, if notjprovided for, would choke or partially choke the apparatuaand in order to prevent thisvI provide an automaticventr Y for the passage of the water oficondensation from-the apparatus. This in general consists of ahinged door adjacent to an opening in the construction, preferably at the low `point where water might accumulate, and when the apparatus is `in operation a partial vacuumY 'is formed thereinby the action ofthe jet blower sufficient to close the door, but if the apparatus'should be stopped:

and the steam shut offentirely,orpartly, the partialvacuum. would bebroken and the door will drop by gravity and allow the water of condensation to escape .through the opening. I may also provide a small opening without ardoor, Which, under certain circumstances, will accomplishV the same purose. u i

, Having thus given a general description;

ofiny invention, I will now, in order to' make the matter-more clear, refer to the annexed sheet of drawings, `which forms part of'this specification, and in which like characters refer tolike parts :-v I

1 Figure l is a side elevation of the lower portion of a gas producer .illustrating the ap.

plication of my invention; Figure 2 is a vertical longitudinal sectional elevation of my improved. muffler on a larger scale, taken on the line II-fIIV of Figure 4; Figure '3 is a side view showing the manner lof attachingy the muffler to the injector blower in a ver tical position insteadof in a horizontal positionlasshown in Figure l; Figuree is a vertical transverse sectional elevation- Vtaken yon the line IVe-I VofFigure 2, and Figure 5 is ak detail -view ofthe modification show-A ing a small, hole in the muffler casing to allow the escape of condensed water instead of the opening and the door of Figures f2 anda. i' i 'Referring now to the characters of reference on the drawings z-l indicates a gas producerin general, Qthe injector blower connected therewith and which kmay -be ofv any of the `well-known or usual types of in; jectorblowers operated by steam, air, etc. One of the types of injector blowers re-v ferred to is shown in Patent802,931, gas

producer, dated October v24th,-1905. A3 is the outer flanged edge of the injector blower and e is my nrlililerV attached there@ by its youter end ybetween it and the casing,

flanges 5, although in certain cases my muiller may be secured to the blower by slinping the same over or within the tubular end of the blower. As illustrated, my mufiler is secured by means of its flange 5 to the blower flangeA 3 by the bolts 6, which pass therethrough, and within the mu'H'ler casing I provide a plurality of baliles '7, having flanged or bent edges 8 secured to the ing, and in each of these'I provide a comparatively large hole 9, which is centrally arranged. In'addition to this I also provide a plurality of holes 10 in the inner baille 7 to provide additional outlets :tor the gases and vapors passing therethrough, as I'have found these are helpful in maintaining' a proper supply of steam'and gases and also in preventing vibration and noise, and be-r tween the ballles 7 I provide other battles 1.1, which lit tightly around the central steam pipe, each having an annular opening at its By reason of this staggered arrangement of openings in the ballies, the air which is drawn within the mul'ller passes through the same in a zig-zag manner from the center to the circumference, thence back to the center and then to the circuniierenee and so on through the central holesor openings 9 in the baflles 7 and through the spaces or openings 12 arranged near the outer circumference of the bal'llesll. Themuiller `and the passages therein are made comparatively large to reduce the velocities of gases and vapors therein, which assists in preventing the noises.

In order to strengthen the parts and pre- Y vent undue vibration, I provide Z-shaped braces or stiileners 13 secured to the. adjacent baille plates as illustrated,and also provide angle brackets 14 for securing the ballles 11 to the casing. A centrally arranged steam pipe 15 passes through the apparatus and is connected to the pipe 1.6, which latter supplies steam to the injector blower. The inlet steam pipe 15 is provided with a regulating valve 17 as illustrated.

As illustrated in Figures 1, 2 and 4, I provide a hinged door 18 on the outside oi the mulller casing and adjacent thereto is an opening 19 in the lower portion of the casing which is adapted to be opened or closed by said door. I also provide a door stop 20 which will only allow the door to be opened a short distance, the door hinge being 21.

As illustrated in Figure 3, the door 22 is arranged at the low point of the apparatus, andas illustrated in Figure 5 a small opening 23 only is provided without a door.V

These openings 19 and 23 are adapted to allow the condensed water to escape from the apparatus to preventobstructing i.t,vand inycases where the doors are used these doors will be 'closed by the partial vacuum due to the operation ot'the'blower, and when the allow the water of' condensation to escape when the steam is shut ott, but at the same Atime will allow a sliffht ine'ress ot air due to the partial vacuum within the apparatus during its operation. Y

The operation of my apparatus is as follows z--lVhen it is desired to supply air and steam or water vapor to the ifuel bed, the valve 17 is opened, and ii desired an air regulating door (not shown) may also be adjusted to give thel required amount oit air opening as is customary with injector blowers. Then this is done the air-Hows into the apparatus through the outer opening 9, passes along the ballles 7, thence through the opening 12, thence backward toward the center and through the central opening 9 in the next baille 7 and so on in'a zig-Zag manner until it'is supplied to the injector blower through the central opening 9 in the last baffle and also partially through the other holes or openings 10 therein. ,As the door 18 is closed bythe partial vacuum it does not disturb the distribution of gases or vapors withinthe apparatus. When the air, steam andvapor supply is desired tobe shut olf, the valve 17 isclosed, the partial vacuum istherebybroken and the pressure in the `apparatus becomes the same as that of the atmosphere outside, whereupon the door 18 or 22 drops by gravity, which allows the discharge of the water ,of condensation.

.In the construction shown in Figure 5, the opening 23 will at all times allow the condensed water to escape, but when the apparatus is in operation a small amount of air will also be drawn therein through the hole.

Although I have described and ,illustrated my invention in considerable detail, I do not wish to be limited to the exact and specilic details thereof, as shown and described, but may use such modifications in, substitutions for, or equivalents thereof as are embraced within the scope oi? my invention, or as pointed out in the claims.

Having thus described my invention, what I claim and desire to'secure by Letters Patent is 1. The combination with an injector blower, ol a muiiler mounted onthc inlet end thereof and provided with a plurality of passages of comparatively large size.

2. The combination with an injector blower,of a muiller mounted on the inlet end thereof, providedwvith a plurality of oircuitous passages of comparatively large size, an opening near the bottom oi said mulller, anda hinged door attached thereto adapted to close and open said opening.

' door.

and open said opening, and a stop to `limit the-outward movementr of the door.

4. The combination with aninjector rblow-e` er, of amuilermounted onthe inlety end thereof, a steam pipe passing through' said muliier, a plurality of circuitous passages within said mufller, an opening in the lower part of the apparatus provided with a hingl ed door to close and open the same, and a stop to limit the outer movement of Asaid 5. The combination with 'an injector blower, of a muiler mounted on theV inlet end 1 thereof, comprising a casinghaving an opening in the outer end thereof, a pluralityl of baflles provided with openings arranged alternately near-they center and the circumerenceof said mullier, ank opening at the y lowerpart oflsaid muii'ler, a hinged doorfadjacent said opening and adapted Vto open and close the same, and a stop to limit lthe outer movement of the door. e

6. The combination with an injector blower, of av muler mounted on thel inlet end thereof, said muler comprising a casing having an opening in each end thereof, a

plurality of bailles provided with openings .arranged alternately nearv the center and near the circumference of said muffler, a

plurality of intermediate openings in the baille plate nearest-theblower, a discharge opening at the lower, part of said muffler, a hinged doorV adjacent said discharge opening v,and adapted to automatically open and close the same, and a stop to limit the outermovement of the door.

nov:

In witness wheref-Iv hereunto alx my signature. n

WILLIAM BANDS.. 

